//Insert
private bool Insert(string firstName, string lastName, string synonym)
{
bool isInserted = false;
try
{
int rowsAffected = 0;
StringBuilder insertQuery = new StringBuilder();
insertQuery.Append("INSERT INTO Customer ");
insertQuery.Append("(");
insertQuery.Append("FirstName, ");
insertQuery.Append("LastName, ");
insertQuery.Append("Synonym ");
insertQuery.Append(") ");
insertQuery.Append("VALUES ");
insertQuery.Append("(");
insertQuery.Append("@FirstName, ");
insertQuery.Append("@LastName, ");
insertQuery.Append("@Synonym ");
insertQuery.Append(");");
using (SqlCommand commandSql = new SqlCommand(insertQuery.ToString()))
{
commandSql.Parameters.AddWithValue("@FirstName", firstName);
commandSql.Parameters.AddWithValue("@LastName", lastName);
commandSql.Parameters.AddWithValue("@Synonym", synonym);
DataAccessLayer dal = new DataAccessLayer();
rowsAffected = dal.Execute(commandSql); // SqlCommand ????
rowsAffected = dal.Insert(commandSql); // SqlDataAdapter ???
}
if (rowsAffected > 0)
{
isInserted = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
return isInserted;
}
//UPDATE
private bool Update(int custId, string firstName, string lastName, string synonym)
{
bool isUpdated = false;
try
{
int rowsAffected = 0;
StringBuilder updateQuery = new StringBuilder();
updateQuery.Append("UPDATE Customer ");
updateQuery.Append("SET ");
updateQuery.Append("FirstName = @FirstName, ");
updateQuery.Append("LastName = @LastName, ");
updateQuery.Append("Synonym = @Synonym ");
updateQuery.Append("WHERE ");
updateQuery.Append("CustomerId = @CustomerId;");
using (SqlCommand commandSql = new SqlCommand(updateQuery.ToString()))
{
commandSql.Parameters.AddWithValue("@CustomerId", custId);
commandSql.Parameters.AddWithValue("@FirstName", firstName);
commandSql.Parameters.AddWithValue("@LastName", lastName);
commandSql.Parameters.AddWithValue("@Synonym", synonym);
DataAccessLayer dal = new DataAccessLayer();
rowsAffected = dal.Execute(commandSql); // SqlCommand ????
rowsAffected = dal.Update(commandSql); // SqlDataAdapter ???
}
if (rowsAffected > 0)
{
isUpdated = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
return isUpdated;
}
//DELETE
private bool Delete(int custId)
{
bool isDeleted = false;
try
{
int rowsAffected = 0;
StringBuilder deleteQuery = new StringBuilder();
deleteQuery.Append("DELETE FROM Customer ");
deleteQuery.Append("WHERE ");
deleteQuery.Append("CustomerId = @CustomerId;");
using (SqlCommand commandSql = new SqlCommand(deleteQuery.ToString()))
{
commandSql.Parameters.AddWithValue("@CustomerId", custId);
DataAccessLayer dal = new DataAccessLayer();
rowsAffected = dal.Delete(commandSql);
rowsAffected = dal.Execute(commandSql); // SqlCommand ????
rowsAffected = dal.Delete(commandSql); // SqlDataAdapter ???
}
if (rowsAffected > 0)
{
isDeleted = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
return isDeleted;
}
